The event, headlined by an Evan Tanner vs. Kendall Grove fight, takes place June 21 at The Palms Las Vegas and airs live on Spike TV.

The UFC also confirmed a few other bouts, bringing the total number of “non-TUF” fights to six for the show’s live finale.

Although the UFC traditionally uses “TUF” cast members to fill out the undercard of the live finales, the organization has booked a total of six “non-TUF” main-card-worthy fights for the event. In addition to Tanner vs. Grove and Lister vs. Horn, the UFC has confirmed previously reported fights of Luigi Fioravanti vs. Diego Sanchez, Spencer Fisher vs. Jeremy Stephens, Josh Burkman vs. Dustin Hazelett, and Marvin Eastman vs. Drew McFedries.

As for Lister, he’ll look to build upon his December victory over Jordan Radev to get back in the UFC’s middleweight title picture. He had emerged as a potential contender after victories over Alessio Sakara and Yuki Sasaki but was dealt a blow when he suffered a lopsided (30-27, 30-25, 30-25) unanimous decision loss to Nate Marquardt at UFC Fight Night 8 in January 2007.

Horn, one of MMA’s most experienced fighters, had left the UFC for nearly two years before he was signed as a late replacement to fight Marquardt at UFC 81. Horn suffered a second-round submission loss — his third loss in his past four fights.

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